简单教程
提交运行
代码编辑器：
<script> var str="Every man in the world! Every woman on earth!"; var patt=/man/g; var str2=str.replace(patt,"person"); document.write(str2+"<br>"); patt=/(wo)?man/g; patt.compile(patt); str2=str.replace(patt,"person"); document.write(str2); </script>
运行结果：